<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=435293
-->
<head>
  <title>Test for Bug 435293</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <style>
    /* Skewed boxes can get very big.  The .pane wrapper prevents them
       from obscuring the test results.  */
    .pane {
      height: 300px;
      width: 300px;
      float: left;
      overflow: auto;
      border: 1px solid black;
    }
    .test {
      background: green;
      height: 100px;
      width: 100px;
      margin: 100px;
    }

    /* Radian units are not used in this test because our CSS
       implementation stores all dimensional values in single-
       precision floating point, which makes it impossible to
       hit mathematically interesting angles with radians.
       Degrees and grads do not suffer this problem.  */
    #test1 {
      -moz-transform: skewx(30deg);
    }
    #test2 {
      -moz-transform: skewy(60deg);
    }
    #test3 {
      -moz-transform: skew(45deg, 45deg);
    }
    #test4 {
      -moz-transform: skew(360deg, 45deg);
    }
    #test5 {
      -moz-transform: skew(45deg, 150grad);
    }
    #test6 {
      -moz-transform: skew(80%, 78px);
    }
    #test7 {
      -moz-transform: skew(2em, 40ex);
    }
    #test8 {
      -moz-transform: skew(-45deg, -465deg);
    }
    #test9 {
      -moz-transform: skew(30deg, 30deg, 30deg);
    }

    /* approach the singularity from the negative side */
    #test10 {
      -moz-transform: skew(50grad, 90.001deg);
    }
    #test11 {
      -moz-transform: skew(300grad, 90.001deg);
    }
  </style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=435293">Mozilla Bug 435293</a>
<p id="display"></p>
<div id="content">
  <div class="pane"><div id="test1" class="test">test</div></div>
  <div class="pane"><p id="test2" class="test">test</p></div>
  <div class="pane"><div id="test3" class="test">test</div></div>
  <div class="pane"><div id="test4" class="test">test</div></div>
  <div class="pane"><div id="test5" class="test">test</div></div>
  <div class="pane"><div id="test6" class="test">test</div></div>
  <div class="pane"><div id="test7" class="test">test</div></div>
  <div class="pane"><div id="test8" class="test">test</div></div>
  <div class="pane"><div id="test9" class="test">test</div></div>
  <div class="pane"><div id="test10" class="test">test</div></div>
  <div class="pane"><div id="test11" class="test">test</div></div>
</div>

<pre id="test">
<script type="application/javascript">
runtests();

function runtests() {
  // For test 1 we need to handle the contingency that different systems may
  // round differently.  We will parse out the values and compare them
  // individually.  The matrix should be: matrix(1, 0, 0.57735, 1, 0, 0)
  var style = window.getComputedStyle(document.getElementById("test1"), "");
  var tformStyle = style.getPropertyValue("-moz-transform");
  var tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
                                         tformStyle.indexOf(')')).split(',');
  is((+tformValues[0]), 1, "Test1: skewx: param 0 is 1");
  is((+tformValues[1]), 0, "Test1: skewx: param 1 is 0");
  ok(verifyRounded(tformValues[2], 0.57735), "Test1: skewx: Rounded param 2 is in bounds");
  is((+tformValues[3]), 1, "Test1: skewx: param 3 is 1");
  is((+tformValues[4]), 0, "Test1: skewx: param 4 is 0");
  is((+tformValues[5]), 0, "Test1: skewx: param 5 is 0");

  // Again, handle rounding for test 2, proper matrix should be:
  // matrix(1, 1.73205, 0, 1, 0, 0)
  style = window.getComputedStyle(document.getElementById("test2"), "");
  tformStyle = style.getPropertyValue("-moz-transform");
  tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
                                     tformStyle.indexOf(')')).split(',');
  is((+tformValues[0]), 1, "Test2: skewy: param 0 is 1");
  ok(verifyRounded(tformValues[1], 1.73205), "Test2: skewy: Rounded param 1 is in bounds");
  is((+tformValues[2]), 0, "Test2: skewy: param 2 is 0");
  is((+tformValues[3]), 1, "Test2: skewy: param 3 is 1");
  is((+tformValues[4]), 0, "Test2: skewy: param 4 is 0");
  is((+tformValues[5]), 0, "Test2: skewy: param 5 is 0");

  style = window.getComputedStyle(document.getElementById("test3"), "");
  is(style.getPropertyValue("-moz-transform"), "matrix(1, 1, 1, 1, 0, 0)",
     "Test3: Skew proper matrix is applied");

  style = window.getComputedStyle(document.getElementById("test4"), "");
  is(style.getPropertyValue("-moz-transform"), "matrix(1, 1, 0, 1, 0, 0)",
     "Test4: Skew angle wrap: proper matrix is applied");

  style = window.getComputedStyle(document.getElementById("test5"), "");
  is(style.getPropertyValue("-moz-transform"), "matrix(1, -1, 1, 1, 0, 0)",
     "Test5: Skew mixing deg and grad");

  style = window.getComputedStyle(document.getElementById("test6"), "");
  is(style.getPropertyValue("-moz-transform"), "none",
     "Test6: Skew with invalid units");

  style = window.getComputedStyle(document.getElementById("test7"), "");
  is(style.getPropertyValue("-moz-transform"), "none",
     "Test7: Skew with more invalid units");

  // Test 8: skew with negative degrees, here again we must handle rounding.
  // The matrix should be: matrix(1, 3.73206, -1, 1, 0, 0)
  style = window.getComputedStyle(document.getElementById("test8"), "");
  tformStyle = style.getPropertyValue("-moz-transform");
  tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
                                     tformStyle.indexOf(')')).split(',');
  is((+tformValues[0]), 1, "Test8: Test skew with negative degrees-param 0 is 1");
  ok(verifyRounded(tformValues[1], 3.73206), "Test8: Rounded param 1 is in bounds");
  is((+tformValues[2]), -1, "Test8: param 2 is -1");
  is((+tformValues[3]), 1, "Test8: param 3 is 1");
  is((+tformValues[4]), 0, "Test8: param 4 is 0");
  is((+tformValues[5]), 0, "Test8: param 5 is 0");

  style = window.getComputedStyle(document.getElementById("test9"), "");
  is(style.getPropertyValue("-moz-transform"), "none",
     "Test9: Skew in 3d should be ignored");

  style = window.getComputedStyle(document.getElementById("test10"), "");
  is(style.getPropertyValue("-moz-transform"), "matrix(1, -10000, 1, 1, 0, 0)",
     "Test10: Skew with nearly infinite numbers");

  style = window.getComputedStyle(document.getElementById("test11"), "");
  is(style.getPropertyValue("-moz-transform"), "matrix(1, -10000, 10000, 1, 0, 0)",
     "Test11: Skew with more infinite numbers");
}

// Verifies that aVal is +/- 0.00001 of aTrueVal
// Returns true if so, false if not
function verifyRounded(aVal, aTrueVal) {
  return (Math.abs(aVal - aTrueVal).toFixed(5) <= 0.00001);
}
</script>
</pre>
</body>
</html>
